520361664 has 112 divisors (see below), whose sum is σ = 1471574400. Its totient is φ = 161796096.

The previous prime is 520361617. The next prime is 520361671. The reversal of 520361664 is 466163025.

It is a super-2 number, since 2×520361664² = 541552522721697792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243352 + ... + 245480.

Almost surely, 2^520361664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520361664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735787200).

520361664 is an abundant number, since it is smaller than the sum of its proper divisors (951212736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520361664 is a wasteful number, since it uses less digits than its factorization.

520361664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 520361664 is about 22811.4371314041. The cubic root of 520361664 is about 804.3315382263.

The spelling of 520361664 in words is "five hundred twenty million, three hundred sixty-one thousand, six hundred sixty-four".